From my understanding of capital gains you can elect which shares you have sold. You can use first in first out or last in first out. Each individual share is calculated seperately. Simply price sold less price paid = capital gain. If is a negative figure then capital loss. Do not have to use first bought first sold though. for example two lots of 500 shares purchased at say $4 and $5 respectively. If you sold 600 shares you could use 300 of each or 500 of $5 and 100 of the $4. The capital base for remaining shares remains as the price you paid for each individual share.
